MULTILAYER PRESSURE SENSITIVE ADHESIVE Russian patent published in 2018 - IPC C09J7/21 C09J133/08 B32B7/12 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to an article and to an adhesive article. Product contains an adhesive for binding substrates and a pressure sensitive adhesive, comprising: (a) a substrate (Sa), (b) a layer (Lb) of a tackifier-free composition (Cb) that comprises one or more acrylic polymer (POLb) having Tg of -10 °C or lower, in contact with said substrate (Sa), and (c) a layer (Lc) of a tackifier-containing composition (Cc) that comprises one or more tackifier and one or more hydrocarbon polymer (POLc) having Tg of -10 °C, in contact with said layer (Lb). Bonded article made by a process of contacting a substrate (Sd) with such a pressure sensitive adhesive article, wherein said substrate (Sd) is in contact with said layer (Lc).

EFFECT: improved adhesion to polyolefin substrates and better resistance to chemical agents are achieved.

5 cl, 2 dwg, 2 ex